Headlight.



PATENTED SEPT. 13, 1904,

G. J. SMITH.

HEADLIGHT.

APPLIOATION FILED DB0. 5, 190s.

N0 MODEL.

,0 0 l 00 l 11 Il I, 10 01 11 1111 1o 111 1111 111 UNTTED STATES Patented September 13, 1904.

PATENT OEEicE.

GEORGE J. SMITH, OF ST. LOUIS, MISSOURI, ASSIGNOR TO ST. LOUIS CAR COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION.

HEADLIGHT.

STEECIFICATION forming part of Letters Patent No. l770,193, dated September 13, 1904.

Application filed December 5, 1903. Serial No. 183,995. (No modell) To all whom it may concern.-

Beit known that I, GEORGE J. SMITH, a citizen of the United States, residing in the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Headlights, of which the following is a full, clear, and exact description, reference being had to the accompanying' drawings, forming part of this specification.

My invention relates to 'that class of headlightsthat are generally used upon street-cars and locomotives and which are lighted by an incandescent electric light.

The object of my invention is to provide the headlight with an adjustable socket-receiving block, by the adjustment of which the incandescent lamp carried by said block is brought to the proper focal point within the parabolic reflector.

The invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I is a horizontal section taken through the center ot' my improved headlight on line I I, Fig'. II. Fig. II is avertical section taken approximately on line II II, Fig. I. Fig. III is a detail vertical section taken approximately on line III III, Fig. I. Fig. IV is a perspective view of the adjustable socket-bearing block made use of inmy improved headlight.

In the construction of the device, 1 indicates the usual parabolic casing, the inner face oi' which is a reflecting-surface or is provided with a reflector, said casing being' provided with the usual glass front 2 and with iianges 3, which provide means for fixing the casing to the dash 4 of the car. Depending from the lower portion is a rectangular casing 5, the inner Jface of one side wall of which is provided with a plurality of horizontally-arranged ribs 6. Located in the chamber Within the casing' 5 is arectangular block 7, one side of which is provided With a series of horizontally-arranged V-shaped grooves 8, which are adapted to receive the ribs 6 on the inner face of the side wall of the casing 5. The upper end of this block 7 is provided with a screwthreaded openingY 9, in which thek socket of the incandescent lamp 10 is seated. This block 7 is held in a fixed position by a setscrew 11, that passes through the Wall of the casing 5 opposite from the wall on which the ribs 6 are formed, the inner end of said setscrew bearing directly upon the face of the block 7 .opposite from the face having the grooves 8 therein. The wires 12 for the lamp pass through an opening 13, formed in the block 7, that communicates with the opening 9, said wires being housed in a tube 14, the upper end of which is seated in a socket 15, formed integral with the lower end of the casing 5, and there beinga set-screw 16, passing through said socket and bearing against the end of the tube 14.

The socket-receiving block 7 is considerably shorter and narrower than is the chamber ,within the casing 5, and it will be readily understood that by loosening the set-screw 11 said block carrying the lamp 10 can be adjusted vertically and laterally to bring said lamp to the proper focal point within the casing 1. When said block7 is properly adjusted, the set-screw 11 is tightened, and together with the engagement of the ribs 6 in the grooves 8 said block carrying the lamp 10 is very rigidly held in proper position.

I claim as my invention 1. In a headlight, the combination with a reflector-casing provided with an integral depending casing, of a lamp-carrying block vertically and laterally adjustable within said depending casing, and means whereby said block is locked in position, substantially as specified.

2. In a headlight, the combination With a reiiector-casing provided with an integral depending' casing having horizontal grooves therein, of a lamp-carrying block within said depending casing, said block having horizontal ribs for engagement with said grooves, and means whereby said block is locked in position.

GEO. J. SMITH.

In presence of# JOHN TEUFER, M. H. MURPHY. 

